文：交通大學六子棋研究小組（台灣）
situation：black win (NCTU6)j10 i8 l9 After finding the key move Joseki1021 for Opening TX-H9, we know we will soon solve this opening since this opening will also use this key move.
In the early day of littlegolem.net, this is also a common opening. But, recently, players rarely used it.
situation：black win (NCTU6)
j10 i8 l9 i11 j12 When compared with Opening TX-H9, this opening has two pieces far away, far apart, and blocking no black pieces. Therefore, we surely want to play the strongest move like this.
Joseki1021 < Key Move in This Opening >
situation：black win (NCTU6)
j10 h9 i8 k11 j12 j8 k8 i9 h8 g7 l12 i11 f11
This is the key to win. This move has been devised by I-Chen Wu in November, 2006. This move also helps solve another Opening.
This move is quite special. Although it has no live 3, it still can win. Due to this reason, this was verifiled, until NCTU6 has been improved in Feb, 2007.
The subsequent variations are quite complex. We simply list a couple. We will add more variations only when some questions are asked.
If there are any bugs, you are welcome to correct us. If there are other sure-wins, you are also welcome to post and discuss.
Variation 1 ：Best defense by White
Joseki 1007:
situation：black win (NCTU6)
j10 i8 h9 k11 j12 j8 k8
Variation 2 ：Second best move for White
situation：black win (NCTU6)
j10 i8 l9 i11 j12 j8 h8
This is the second best defense for White,
Black still wins. However, if Black is careless, White can defend, as shown in the second variation.
This is the winning move by Black.
White's Live 5 is not useful.
situation：black win (NCTU6)
j10 i8 l9 i11 j12 j8 h8 k9 l8 m7 h12 k11 h10 k13 f8 g8 j11
後續變化二：Careless Moves by Black 
situation：black win (NCTU6)
j10 i8 l9 i11 j12 j8 h8 k9 l8 m7 h12 h10 g9 f8 k13 g8 g10 g11 i10 g7 f9 g6 e10
Black 7 and 9 are careless moves. In fact, many good players may also choose such moves.
After White 10, Black has no immediately winning moves.
後續變化一：黑的必勝下法
situation：black win (NCTU6)
j10 i8 l9 i11 j12 j8 h8 k9 l8 m7 h12 k11 h10
Variation 3 ：
situation：black win (NCTU6)
j10 i8 l9 i11 j12 j8 g8 h10 h8
This is the easiest one among the first three variations.
Variation 4：
situation：black win (NCTU6)
j10 i8 l9 i11 j12 h10 l11 h12 g13 f14 l8 i12 l12 k12 l7 l6
g12
This could be called a defense. However, still, White has less 4 than Black.
原始出處(URL)：http://www.connect6.org/web/index.php?option=com_opening&id=503&imgmirror=0&lang=tw
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